<!doctype html>
<html>

<head>
	<title>Toggle Scale Type</title>
	<script src="../../Chart.bundle.js"></script>
	<script src="../utils.js"></script>
	<style>
	canvas {
		-moz-user-select: none;
		-webkit-user-select: none;
		-ms-user-select: none;
	}
	</style>
</head>

<body>
	<div style="width:75%;">
		<canvas id="canvas"></canvas>
	</div>
	<button id="toggleScale">Toggle Scale Type</button>
	<script>
		var randomScalingFactor = function() {
			return Math.ceil(Math.random() * 10.0) * Math.pow(10, Math.ceil(Math.random() * 5));
		};

		var type = 'linear';

		var config = {
			type: 'line',
			data: {
				labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
				datasets: [{
					label: 'My First dataset',
					backgroundColor: window.chartColors.red,
					borderColor: window.chartColors.red,
					fill: false,
					data: [
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor()
					],
				}, {
					label: 'My Second dataset',
					backgroundColor: window.chartColors.blue,
					borderColor: window.chartColors.blue,
					fill: false,
					data: [
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor(),
						randomScalingFactor()
					],
				}]
			},
			options: {
				responsive: true,
				title: {
					display: true,
					text: 'Chart.js Line Chart - ' + type
				},
				scales: {
					xAxes: [{
						display: true,
					}],
					yAxes: [{
						display: true,
						type: type
					}]
				}
			}
		};

		window.onload = function() {
			var ctx = document.getElementById('canvas').getContext('2d');
			window.myLine = new Chart(ctx, config);
		};

		document.getElementById('toggleScale').addEventListener('click', function() {
			type = type === 'linear' ? 'logarithmic' : 'linear';
			window.myLine.options.title.text = 'Chart.js Line Chart - ' + type;
			window.myLine.options.scales.yAxes[0] = {
				display: true,
				type: type
			};

			window.myLine.update();
		});
	</script>
</body>

</html>
